321203341320444 has 216 divisors, whose sum is σ = 920355637546800. Its totient is φ = 94323011904000.

The previous prime is 321203341320413. The next prime is 321203341320487. The reversal of 321203341320444 is 444023143302123.

321203341320444 is a `hidden beast` number, since 3 + 2 + 1 + 2 + 0 + 33 + 413 + 204 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 321203341320399 and 321203341320408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 20575599 + ... + 32646009.

Almost surely, 2^{321203341320444} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321203341320444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460177818773400).

321203341320444 is an abundant number, since it is smaller than the sum of its proper divisors (599152296226356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321203341320444 is a wasteful number, since it uses less digits than its factorization.

321203341320444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12070633 (or 12070617 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 321203341320444 its reverse (444023143302123), we get a palindrome (765226484622567).

The spelling of 321203341320444 in words is "three hundred twenty-one trillion, two hundred three billion, three hundred forty-one million, three hundred twenty thousand, four hundred forty-four".